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Water Quality Standards Public Meeting

Water Quality Standards Public Meeting. April 30, 2008. 2008 Legislative session. 47CSR2 WQS Triennial review passed March 6, 2008 Governor signed on March 28, 2008 Rule filed with Secretary of State on April 11, 2008, effective date July 1, 2008

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Water Quality Standards Public Meeting

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  1. Water Quality Standards Public Meeting April 30, 2008

  2. 2008 Legislative session • 47CSR2 WQS Triennial review passed March 6, 2008 • Governor signed on March 28, 2008 • Rule filed with Secretary of State on April 11, 2008, effective date July 1, 2008 • Rationale document will be sent to EPA for approval in July 2008

  3. Changes during Legislative session • The proposed additions to the trout water list were removed • Removal of Tier 2.5 and change in the definition of Tier 3 waters

  4. High points of triennial review • Nutrients criteria, including phosphorous and chlorophyll-a, for both warm and cool water lakes • Dissolved aluminum warmwater chronic value of 750 g/l was passed, replacing the emergency rule which expires September 14, 2008 • Criteria for four parameters in Appendix E were updated based on EPA recommendation

  5. 16 parameters added to Appendix E with WQS limits based on EPA’s Current National Recommended Water Quality Criteria • Formulas in Appendix E used to calculate aquatic life limits for metals, were updated to reflect current EPA recommendations • Use Removal of Category A and D1 designations on Pats Branch

  6. Timelines for 2009 Proposed Rules • June 10, 2008 – Proposed rules delivered to Advisory Council members • June 24, 2008 – Advisory Council meets at 1:30 pm • July 1, 2008 – File notice of public hearing and public comment period with Secretary of State • August 18-25, 2008 – public hearing • August 29, 2008 – Last day to file Agency approved rule with Secretary of State

  7. Proposed rule revision for 2009 • Category A revision

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